CQPhone

CQPhone is an easy to use PC-to-PC phone, that allows voice chat, as well as video chat and text chat. In addition, you can easily exchange pictures and web links by simply dragging them onto the interface. Once you install the software, you will be automatically assigned a phone number, no registration or sign up required. To connect to your friend)s), simply enter their CQPhone number, just like you would with an ordinary phone. CQPhone works with most firewalls and routers without additional configurations. The sound quality is very good.

Platform:
98/ME/2000/XP

Link download: